：针对背景差分算法中在复杂背景下参考帧的提取问题，提出了一种新的背景提取方法；该算法用帧间差分法将帧中的背景象

素点检测出来，再确立出背景帧-: For the background subtraction algorithm in complex background reference frame extracting problems, a new background extraction　The algorithm uses inter-frame difference method to frame the background pixels detected, and then set out the background frame